Buffing and draft gear for railway and other rolling-stock.



l c. WATSON. BUPPING AND DRAFT. GEB POB RAILWAY ABD OTHER BGLLING STOCK.

APPLIOATIOI FILED 00T. I8, lul.

1,062,312. l Patented May 20,1913.

3 SHEETS-SHEET 1.

3. WATSON. l BUIFING AND DRAFT GEAR 33 RAILWAY AND OTHER ROLLING STOCK.

Arrmonfmx num oo'r. 2a, 1911.

1,062,312. Patented Mymma g Inman-naf! n.

@L N v u J l KLQQZ a @A my '\m% g m 'QC m \\K\l 24 im E b $1XH: ig l m:

y n r WlTNEssEs. A INve'N'To @www C. WATSON. DUPFING AND DRAFT @BAB ron RAILWAY AND OTHER ROLLING sTooK.

APPLICATION FILED 00T. 23, 1911.`

Patented May 20, 1913.

3 SHEETS-SHEET 3.

CECIL WATSON, OF LONDON, ENGLAND.

BUFFING- AND DRAFT GEAR FOR RAILWAY AND OTHER ROLLING-STOCK.

Specification of Letters jatent.

Patented May 2o, 1913.

Application tiled October 23,' 1.911. Serial No. 656,162.

T o all whom it may concern.' A

Be it known that 1,/CEcn. WATSON, a subject yof His Majesty the King of Great Britain, and a resident of London, England,

5 have invented a certain new and useful'lr'rr rovement in Buffn and Draft Gear for gailwa'y and`other ol'ling-Stock, 'ofwhilgh the following is a specification. This invention relates to improvementn '10 bufling gear and more. articularly to combined buffing and dra t gear and hasA for its object to provide an improved arrangement giviiw an increased range combined with agraiuation of the resistance to both compression and tension. A

' According to the invention the improved arrangement consists essentially of two s rinlgs placed in tandem around a single siiaftgr drawbar se "rated by a pair of zo'preferably fsinrilar-*lgnged ferrules, the sleevejport'ions of which are slotted s that one sleeve can slide through the other. These slotted ferrules are engaged with one another with the inner faces of their flanges tothe required amount., The outer errules.

f abut against fixed 'stops at either end of the arrangement. v

To enable the invention to be fully underit willnow'be'described by reference to the accompanying drawings which illustrate' by" way of example' several embodiments of, he invention.

In the 4rawings:'--Fignre 1 is a sectional!` view showing the-slotted ferrules carried by y .a .fixed central bracket. Fig. 2 is a similar vewbutwith the central bracket having a limited amount 'o fv'play. Fig. 3 shows a u face, sectional and a view in elevation of one of 'the slotted ferrules employed,- the sleeve portion thereof' being adapted to lallow n second similar ferrule to slide therethrough. Fig. 3'* shows views similar to u Fig. 8 of e second ferrule the sleeve portion of which is adapted to slide through the .e1-ably similar fianged in juxtaposition so thatzthe slotted sleeve,

sleeve portionof the ferrule shown in Fig. 3. Fig. 4 shows a modified arrangement in which the fixed or movable central bracket' is omitted. Fig. 5 shows a modified ar- @0 rangement of three springs. Fig. 6 'an arrangementof four springs and Fig. 7 a

, modified arrangement of three springs. I y In the simplest case as shown in Fig. 1,

theiarrangement consists of two springs A g5 and B placed in tandem around a shaft or drawbar C andA separated by a pair of referrules D and 'the sleeve portions 'of which are .slotted so that the can be interchanged and one'sleeve can 70 sli e through the other. The preferred construction of these ferrules is shown in Figs.

3 and 3". These slotted ferrules are engaged with one another with the inner faces of their flanges in juxtaposition so that. the slotted sleeve ortions.l of each ferrule protrude beyond t e flange of the opposite ferru1e. The outer endsof the two springs A and B also engage with referabiy nnslotted ,I 4fianged ferrules-F and (El), the sleeve portion so of which projects inside the spring and is made of such length asto come in contact with the end of the opposing-slotted sleeve portion of the ferrules D and E respectively so soon as either spring has been com ressed v to the required amount. The outer errules F, G,abut against fixed stops 1, l, 2, 2, respectively. The action of the arrangement when subjected to compressional'or tensional strain is as follows :-The first efl'ect is to 90` compress one .spring AA against the ferrule flange D resting against the central stop bracketH .until the ferrule F within that spring .comes in contact with the sleeve`porv tion of E. The second effect is that further pressure is transmitted through the slotted sleeve of and its flange to the spring B on the op osite side of the central bracket which is t en compressed. It follows from .this arrangement that during the first por- 10ft tion of the stroke the resistance is equal to that of one spring A and'that during'the second portion the resistance is equal to that of the two springs A and B in parallel. It further follows that .the sequence of operations is the same in either direction, so that 'it is equally applicable for bnfling or draft gear. A further. gradation of the resistance of the arrangement l'can be obtained by substituting for the fixed central stop 110 bracket H. a system of selectivestops which permit a limited travel to either of the f inner-flanged .fel-rules in the direction of the pressure while allowing `free travel che opposite direction. As shown in Fig.2 this stopping action may be secured by hs. loose bracket or plate'I between of .the central ferrules D,E, the travel of `which is imited .in either direction by means of 'itable Istops K anflL, the end ferrules in this arrangement being de noted by F and G respectively. With this ar. rangement on movement of .the drawbar C Ain veither 'direction' both springs are first slightly compressed until Ythe bracketV meets one or other of the stops K, L, when' a single spring only.- is compressed. Further movement of the'drawbar then causes both springs to be compressed again.v

.In the modification shown in Fig. 4 the fixed or movable bracket is omitted and' one of the end ferrules F2 or'G ismade shorter than the other. As shown ferrule F2 is the, lshorter and as the system is compressed the first action will be tov compress both springs I A and B until ferrule D comes into contact with ferrule Gzaftcr which spring A only,

is further compressed until the' 'ferrule.r

comes into contact with ferrule F2 whenfboth springs again take the pressure. The Vabove arrangements therefore allow 'of a gradua` ries, in paralleli with the spring 21.A

` springs 30, 31,32, 33. A

tion of the resistance of the springs to both compression and tension." The graduations ycan be adjusted byfv'arying the initial s ace between the ferriiles and the position o? the stops. 1

.It will be evident that manyarrangements of gear constructed according to this invention are possible for example n,lig..z 5 an arrangement is showmin-wliic three springs 20, 21 2 2 a re separated by two sets lof oppositelyarranged split ferrules 23, 24,.

the,..ends of springs 20; 22, and secured'to the draw bar 29. With this arrangement the action under compression 'is as follows (1) The springs 20, 21, 22 are compressed inseries. (2) Ferrule'24, meets the ferrule 25,-' causing springs 20, 22 to be compressed in series. (3) The ferrule 26 meets the ferrule 28, and spring 20 only ,is compressed. (4 Finally the ferrule 23 meets the ferrulewQiZr and the' springs 20, 22 are compressed ser' Fig. 6 shows an arrangement `of tout. Y pair-of oppositely arranged split ferrules 34, 35 vare placed be# tweenthe springs 30,31, and another pair 36,'37 between the springs'32, 33., The springs 31, A32 are separated' by means of a Vpair of oppositely Yarranged split ferrules 38, 39, which pass-outside the springs and. are adapted to make contact with the .ferrv` Legame vided' saidf. errules being separated by 'the-1 spring 51. Two ferrules 57, 58 are provided produce the ruire/d sequence of action of the springs. ith this arrangement gradua ion of com ression can be obtained as follows :-1. 'IJ ee springs in series. 2. One

v'43, are provided as shown. With a r'1 p .rangement graduations of compression can which coperate with/ the other ferrules' to lspring inseris. 3. The equivalent of three springs inparallel. I I am 'aware that in bufling gear it has been proposed'. to use two springsirst one singly and/then both in arallel, and also in combied bufiing and osed tonuse' two or morefs rings wor ing rst sin -ly and thenin para lel, and I malte no broa claim to such constructions.

What I claim isl and similar'purposes, a drawbar, springs in springs, said ferrules -being oppositely arranged, slotted sleeves 'on said ferrules pro- Aject-'ing -withintheg'springs and ferrules hav- 'ingg sleeve portio s` projecting inside the,v rings,fthe sleeves of theA outer ends-of the -various ferrules c perating on contact one with the other to regulate the se uence of 2. For? a Combinedbuflingand draw gear and similar purposes, Va drawbar, springs in tandem on said drawbar, a stop bracket sepl'arating said springs,.a` flanged slotted ferrule passingthrougli'said bracketfand adapted to compress one spring, a second flan ed slottedy ferrule passing through the lirstf ercoperatingon Contact one with the vother to regulate the'sequence of. the action of the springs substantially as described. In testimony whereof-I have hereunto set myy hand in the presence of two subscribing witnesses.-

.v- CECIL WATSON. .Witnesses: f

rules 40, 414 respectively. Further, ferrules JONES 1 AA..Gr.''Mocenriaroic raw'gear it has been] ro- 1. For .a'combined builng and draw gear tandem on said"`drawbar,; flanged .ferrules I vslidingone within the other separating saidv the action of the springs substantia ly as dei rule and adapted to compress Athe other. wspxzinggandlferrules having sleeve portions projecting inside the outer ends of 'thef springs, the sleeves of the `various ferrules, 

